OPTIMAL FEEDBACK CONTROL STRATEGY FOR MAIN STEAM TEMPERATURE[J]. Thermal power generation, 2004, (1): 61-64. DOI: 10.19666/j.rlfd.2004.01.019.
主蒸汽温度的最优反馈控制策略
摘要
基于最优控制原理
提出了主蒸汽温度最优反馈控制策略
以优化、求解状态反馈矩阵
实现用尽量少的减温水量完成蒸汽温度对设定值快而稳的跟踪
同时取消PID控制
简化了控制系统。此外
为克服稳态偏差
还给出了一种简便的改进方法
即在主蒸汽温度最优反馈策略中增加了稳态偏差判断器和BP网络修正器
仿真结果表明效果良好。
Abstract
Based on optimal feedback control principle
a strategy of optimal feedback control for main steam temperature has been put forward to optimize and resolve the state feedback matrix
realizing rapid and stable followup to setted value of steam temperature by using desuperheating water quantity as little as possible. At the same time
the DID control can be eliminated
and the control system may be simplified. Besides
in order to overcome the steadystate deviation
an improved and simplified method
namely addition of steadystate deviation discriminator and BP network corrector into the optimal feedback strategy for main steam temperature
has been given. Simulation shows that the said method has good effectivenees.